I think you need to wait to at least day 7 or ideal is day 10 to candle. Just be patient.
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Once I upgraded to a really nice incubator and went with eggs from my local farm, things went a little smoother and I was able to hatch 3 out of 8 eggs (3 were infertile, one quit early, and one quit right before lockdown). We learn as we go and I'm sure the hatch rate will get better each time
Good luck with the little one and keep us updated!!